An atomizer is disclosed. The atomizer of the present invention comprises a main unit, a pipe, and a vaporizer. The vaporizer of the present invention comprises a pneumatic switch which is triggered by the airflow from the main unit. There is no conducting wire between the main unit and the vaporizer. The length of the pipe is determined according to the requirement of the user. In one embodiment of the present invention, the atomizer is remote controllable.